A study of the world's most peaceful countries released earlier this year puts the U.S. as number 83. The top five most peaceful countries are said to be, respectively: New Zealand (#1), Denmark, Norway, Iceland, and Austria.
Israel is ranked as fourth to last (141) among the 144 countries ranked. To put this into perspective, Pakistan is ranked at #137. See http://www.visionofhumanity.org/gpi/results/rankings.php for the list.
According to the site, the rankings were arrived at by: "Twenty-three indicators of the existence or absence of peace were chosen by the panel of experts, which are divided into three broad categories: measures of ongoing domestic and international conflict, measures of safety and security in society and measures of militarization." For more details, see: http://www.visionofhumanity.org/gpi/about-gpi/methodology.php